Evidence map›Paper›PMID 31104239›Full record

ArticleEnvironmental science and pollution research international2019

Copper(II) generates ROS and RNS, impairs antioxidant system and damages membrane and DNA in human blood cells.

Nazim Husain, Riaz Mahmood

Abstract read
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In one paragraph

Article in Environmental science and pollution research international, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 48 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
48citing papers in PubMed, 1 pooled it
4.3field-weighted citation impact, top 5% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

48 citing papers in PubMed, 1 synthesis or guideline pooled it, 104 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Article
  4. Review
  5. Review
  6. Copper-Induced Thyroid Disruption and Oxidative Stress inAntioxidants (Basel, Switzerland) · 2026
    Article
  7. Review
  8. Review
  9. Review
  10. High-ResolutionMolecules (Basel, Switzerland) · 2025
    Article
  11. Article
  12. Review
  13. Article
  14. Review
  15. Article
  16. Article
  17. Article
  18. Review
  19. Dysfunctional copper homeostasis inRedox biochemistry and chemistry · 2024
    Article
  20. Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

2 authors at 1 institution in 1 country.

Nazim HusainDepartment of Biochemistry, Faculty of Life Sciences, Aligarh Muslim University, Aligarh, UP, 202002, India.
Riaz MahmoodDepartment of Biochemistry, Faculty of Life Sciences, Aligarh Muslim University, Aligarh, UP, 202002, India. riazmahmood2002@yahoo.co.in.ORCID http://orcid.org/0000-0002-8282-9511
Aligarh Muslim University · IN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Copper (Cu) is widely used in various industries, and human exposure to this metal results in severe multi-organ toxicity, which is thought to be due to the generation of free radicals by Fenton-like reaction. The generation of reactive oxygen as well as nitrogen species and free radicals results in induction of oxidative stress in the cell. We have studied the effect of different concentrations of Cu(II) on human erythrocytes and lymphocytes. Incubation of erythrocytes with copper chloride, a Cu(II) compound, enhanced the production of reactive oxygen and nitrogen species, decreased glutathione and total sulphydryl content and increased protein oxidation and lipid peroxidation. All changes were in a Cu(II) concentration-dependent manner. This strongly suggests that Cu(II) causes oxidative damage in erythrocytes. The activities of major antioxidant enzymes were altered, and antioxidant power was lowered. Cu(II) treatment also resulted in membrane damage in erythrocytes as seen by electron microscopy and lowered activities of plasma membrane-bound enzymes. Incubation of human lymphocytes with Cu(II) resulted in DNA damage when studied by the sensitive comet assay. These results show that Cu(II) exerts cytotoxic and genotoxic effects on human blood cells probably by enhancing the generation of reactive oxygen and nitrogen species.

Indexed as

AntioxidantsCell MembraneCopperDNA DamageErythrocytesHumansLymphocytesOxidative StressReactive Nitrogen SpeciesReactive Oxygen SpeciesAntioxidantsCopperReactive Nitrogen SpeciesReactive Oxygen SpeciesAntioxidant powerErythrocytesFree radicalsMetalOxidative damage

Identifiers

PMID31104239
OpenAlexW2945055633

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.